CN109995141A - A kind of power control unit that achievable emergency power off is self-locking and control method - Google Patents
A kind of power control unit that achievable emergency power off is self-locking and control method Download PDFInfo
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- CN109995141A CN109995141A CN201910296163.1A CN201910296163A CN109995141A CN 109995141 A CN109995141 A CN 109995141A CN 201910296163 A CN201910296163 A CN 201910296163A CN 109995141 A CN109995141 A CN 109995141A
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- relay
- power
- remote
- emergency
- control unit
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of power control unit that achievable emergency power off is self-locking, relay, power input, power output end, remote emergency switches, control unit, reset button.The invention also discloses a kind of power control methods that achievable emergency power off is self-locking, are applied in above-mentioned control equipment, comprising the following steps: when detecting emergency shut-off signals, control relay shutdown；After relay shutdown, whether detection reset button is triggered；If reset button is not triggered, relay is still remained open；If reset button is triggered, the reception signal of remote emergency switch is detected；If remote emergency switch does not receive recovery signal, relay still maintains disconnection；If remote emergency switch receives recovery signal, relay conducting.The present invention solves the security risk as caused by remote control terminal maloperation after emergency power off.
Description
Technical field
The present invention relates to power-supply device control technology field more particularly to a kind of power supply controls that achievable emergency power off is self-locking
Control equipment and control method.
Background technique
Remote power control equipment is the equipment for referring to control the power supply on or off of equipment by phone or network remote.
Such as by remotely giving one switching signal of power control unit, equipment is after detecting the switching signal, to all power supplies
Port carries out emergency power off.Existing power supply controls equipment by 2P (Pin, needle) input terminal, relay and MCU
(Microcontroller Unit, micro-control unit) composition, remote control terminal are opened to 2P terminal one of power control unit
OFF signal, control relay disconnects after MCU receives the switching signal, realizes emergency power off.
However, equipment will not be self-locking after existing remote power control equipment emergency power off.For example, remote control terminal is given
Emergency switch signal triggering power control unit out enters emergency power off state, but due to no self-locking logic, power supply control
Equipment is still remotely controlled, if maloperation occurs in remote control terminal at this time, field power supply control equipment can be made to come back to
Normal power supply state causes scene serious safety problem occur.
Summary of the invention
In order to solve the technical problems in background technology, the invention proposes a kind of achievable emergency power off is self-locking
Power control unit and control method, to solve the peace as caused by remote control terminal maloperation after emergency power off in the prior art
Full hidden danger.
The self-locking power control unit of a kind of achievable emergency power off proposed by the present invention, comprising: relay, power input
End, power output end, remote emergency switch, control unit, reset button；
Relay, connects power input and power output end, and control power supply power supply circuit is turned on or off；
Remote emergency switch, connect with remote control terminal, receives the emergency switch signal that remote control terminal issues；
Control unit is connect, in the disconnection for receiving remote emergency switch with remote emergency switch, reset button and relay
After signal, control relay open circuit；Detecting that reset button is triggered, and after receiving the recovery signal of remote emergency switch,
Control relay connection.
Preferably, remote emergency switch includes receiving terminal, varistor, rectifier bridge and optocoupler；
Receiving terminal, for receiving the emergency switch signal of remote control terminal sending；
Varistor is connect with receiving terminal, carries out voltage clamping when circuit bears over-voltage, carries out surge guarantor to optocoupler
Shield；
Rectifier bridge is connect with varistor, carries out full-bridge rectification to emergency switch signal；
Optocoupler is connect with rectifier bridge, plays isolation to input, output electric signal.
Preferably, further include CPLD, connect respectively with optocoupler, control unit and relay, CPLD receives optocoupler transmission
After level signal, the control signal provided with control unit carries out and operation, obtains relay control signal.
Preferably, it is equipped with insulation crust；
Remote emergency switch setting is square on the control unit；
Reset button is arranged on the left of control unit, and is arranged on insulation crust；
Relay is arranged below control unit；
Power input and power output end are separately positioned on the insulation crust of relay two sides.
A kind of self-locking power control method of achievable emergency power off proposed by the present invention is applied to include relay, electricity
Source input terminal, power output end, remote emergency switch, control unit, in the equipment of reset button, comprising the following steps:
When detecting emergency shut-off signals, control relay shutdown；
After relay shutdown, whether detection reset button is triggered；
If reset button is not triggered, relay is still remained open；
If reset button is triggered, the reception signal of remote emergency switch is detected；
If remote emergency switch does not receive recovery signal, relay still maintains disconnection；
If remote emergency switch receives recovery signal, relay conducting.
In the present invention, the emergency switch signal that remote control terminal provides, triggering power control unit enters emergency power off
State, power control unit powers off all supply ports, after field personnel has been handled, is pressed by triggering to reset
Button, power control unit can be remotely controlled again, to guarantee the safety of field personnel and equipment.
Detailed description of the invention
Fig. 1 is a kind of self-locking power control unit structure chart of achievable emergency power off of the proposition of the embodiment of the present invention 1；
Fig. 2 is a kind of self-locking power control unit structure chart of achievable emergency power off of the proposition of the embodiment of the present invention 2；
Fig. 3 is a kind of self-locking power control unit structure chart of achievable emergency power off of the proposition of the embodiment of the present invention 3；
Fig. 4 is that the embodiment of the present invention proposes a kind of power control method flow chart that achievable emergency power off is self-locking.
Specific embodiment
The embodiment of the present invention 1 proposes a kind of power control unit that achievable emergency power off is self-locking, and structure top view is such as
Shown in Fig. 1, comprising: relay 10, power output end 30, remote emergency switch 40, control unit 50, is answered at power input 20
Position button 60；
Relay 10, connects power input 20 and power output end 30, and control power supply power supply circuit is turned on or off；
Remote emergency switch 40, connect with remote control terminal, receives the emergency switch signal that remote control terminal issues；
Control unit 50 connect with remote emergency switch 40, reset button 60 and relay 10, opens receiving remote emergency
After closing 40 cut-off signal, 10 open circuit of control relay；It is detecting that reset button 60 is triggered, and is receiving remote emergency switch
After 40 recovery signal, control relay 10 is connected to, otherwise 10 open circuit of guard relay.
In the present invention in a specific embodiment, as shown in Fig. 2, remote emergency switch 40 includes receiving terminal 41, pressure-sensitive
Resistance 42, rectifier bridge 43 and optocoupler 44.Receiving terminal 41 is 2pin terminal, for receiving the emergency switch of remote control terminal sending
Signal；Varistor 42 is connect with receiving terminal 41, is carried out voltage clamping when circuit bears over-voltage, is carried out wave to optocoupler 44
Gush protection；Rectifier bridge 43 is connect with varistor 42, is carried out full-bridge rectification to emergency switch signal, is allow 2pin terminal just
It connects and is reversely connected；Optocoupler 44 is connect with rectifier bridge 43, plays isolation to input, output electric signal；Emergency switch signal is through over commutation
Control unit 50 is reached after bridge, optocoupler.For example, process is pressure-sensitive after 2pin terminal receives the high level that remote control terminal provides
Resistance 42 and rectifier bridge 43 give 44 1 high level signals of optocoupler, urgent to control unit 50 1 after optocoupler 44 is isolated
Switching signal (such as low level)；After control unit 50 receives the level, a low level relay control signal hair is generated
The control terminal of relay 10 is given, so that relay 10 be made to disconnect, is realized for electrical output terminal emergency power off；Later, control is single
Member 50 starts to detect reset button 60, if reset button 60 is not triggered, relay 10 is still remained open, and makes local device
It is no longer remotely controlled, conversely, the reception signal of remote emergency switch 40 is detected, if far if reset button 60 is triggered
Journey emergency switch 40 does not receive recovery signal, then relay 10 still maintains disconnection, if remote emergency switch 40 receives
Restore signal, then relay 10 is connected.
In addition, can increase CPLD in present device, (Complex Programmable Logic Device is answered
Miscellaneous programmable logic device) 70, as shown in figure 3, CPLD70 is connect with optocoupler 44, control unit 50 and relay 10 respectively,
After CPLD70 receives the level signal of the transmission of optocoupler 44, the control signal provided with control unit 50 carries out and operation, obtains one
A low level relay control signal is realized so that relay 10 be made to disconnect for electrical output terminal emergency power off.
The embodiment of the present invention proposes a kind of power control method that achievable emergency power off is self-locking, as shown in figure 4, include with
Lower step:
Step 101, when detecting emergency shut-off signals, control relay shutdown；
Step 102, after relay shutdown, whether detection reset button is triggered；
Step 103, if reset button 60 is not triggered, relay 10 is still remained open, make local device no longer by
Long-range control；
Step 104, if reset button 60 is triggered, the reception signal of remote emergency switch 40 is detected；
Step 105, if remote emergency switch 40 does not receive recovery signal, relay 10 still maintains disconnection；
Step 106, if remote emergency switch 40 receives recovery signal, relay 10 is connected.
In the present invention, the emergency switch signal that remote control terminal provides, triggering power control unit enters emergency power off
State, power control unit powers off all supply ports, after field personnel has been handled, is pressed by triggering to reset
Button, power control unit can be remotely controlled again, to guarantee the safety of field personnel and equipment.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (4)
1. a kind of power control unit that achievable emergency power off is self-locking characterized by comprising relay (10), power supply are defeated
Enter end (20), power output end (30), remote emergency switch (40), control unit (50), reset button (60)；
Relay (10), connects power input (20) and power output end (30), and on-off is led in control power supply power supply circuit
It opens；
Remote emergency switchs (40), connect with remote control terminal, receives the emergency switch signal that remote control terminal issues；
Control unit (50) is connect with remote emergency switch (40), reset button (60) and relay (10), long-range tight receiving
After the cut-off signal of anxious switch (40), control relay (10) open circuit；It is detecting that reset button (60) is triggered, and is receiving remote
After the recovery signal of journey emergency switch (40), control relay (10) connection.
2. the self-locking power control unit of achievable emergency power off according to claim 1, which is characterized in that remote emergency
Switching (40) includes receiving terminal (41), varistor (42), rectifier bridge (43) and optocoupler (44)；
Receiving terminal (41), for receiving the emergency switch signal of remote control terminal sending；
Varistor (42) is connect with receiving terminal (41), circuit bear over-voltage when carry out voltage clamping, to optocoupler (44) into
Row surge protection；
Rectifier bridge (43) is connect with varistor (42), carries out full-bridge rectification to emergency switch signal；
Optocoupler (44) is connect with rectifier bridge (43), plays isolation to input, output electric signal.
3. the self-locking power control unit of achievable emergency power off according to claim 1, which is characterized in that further include
CPLD (70) is connect with optocoupler (44), control unit (50) and relay (10) respectively, and CPLD70 receives optocoupler (44) transmission
After level signal, carries out and operate with the control signal that control unit (50) provides, obtain relay control signal.
4. a kind of power control method that achievable emergency power off is self-locking is applied to defeated including relay, power input, power supply
Outlet, remote emergency switch, control unit, in the equipment of reset button, which comprises the following steps:
When detecting emergency shut-off signals, control relay shutdown；
After relay shutdown, whether detection reset button is triggered；
If reset button is not triggered, relay is still remained open；
If reset button is triggered, the reception signal of remote emergency switch is detected；
If remote emergency switch does not receive recovery signal, relay still maintains disconnection；
If remote emergency switch receives recovery signal, relay conducting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910296163.1A CN109995141A (en) | 2019-04-13 | 2019-04-13 | A kind of power control unit that achievable emergency power off is self-locking and control method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910296163.1A CN109995141A (en) | 2019-04-13 | 2019-04-13 | A kind of power control unit that achievable emergency power off is self-locking and control method |
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| Publication Number | Publication Date |
|---|---|
| CN109995141A true CN109995141A (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910296163.1A Pending CN109995141A (en) | 2019-04-13 | 2019-04-13 | A kind of power control unit that achievable emergency power off is self-locking and control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706954A (en) * | 2019-09-12 | 2020-01-17 | 恒大智慧充电科技有限公司 | Emergency stop switch circuit and emergency stop and reset method of emergency stop switch |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203800585U (en) * | 2014-03-28 | 2014-08-27 | 广州易仕科技有限公司 | Surge protective device |
| CN206920850U (en) * | 2017-07-11 | 2018-01-23 | 西安花生科技有限公司 | Wireless intelligent switch with emergent control |
| CN108749581A (en) * | 2018-05-11 | 2018-11-06 | 北京理工大学 | A kind of emergency brake circuit system of pure electric vehicle unmanned vehicle |
| CN208094436U (en) * | 2018-03-27 | 2018-11-13 | 深圳和而泰智能控制股份有限公司 | Self-locking power on-off control circuit and electronic equipment |
| CN209896772U (en) * | 2019-04-13 | 2020-01-03 | 北京京投亿雅捷交通科技有限公司 | Power control equipment capable of realizing self-locking in emergency power-off |
-
2019
- 2019-04-13 CN CN201910296163.1A patent/CN109995141A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203800585U (en) * | 2014-03-28 | 2014-08-27 | 广州易仕科技有限公司 | Surge protective device |
| CN206920850U (en) * | 2017-07-11 | 2018-01-23 | 西安花生科技有限公司 | Wireless intelligent switch with emergent control |
| CN208094436U (en) * | 2018-03-27 | 2018-11-13 | 深圳和而泰智能控制股份有限公司 | Self-locking power on-off control circuit and electronic equipment |
| CN108749581A (en) * | 2018-05-11 | 2018-11-06 | 北京理工大学 | A kind of emergency brake circuit system of pure electric vehicle unmanned vehicle |
| CN209896772U (en) * | 2019-04-13 | 2020-01-03 | 北京京投亿雅捷交通科技有限公司 | Power control equipment capable of realizing self-locking in emergency power-off |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110706954A (en) * | 2019-09-12 | 2020-01-17 | 恒大智慧充电科技有限公司 | Emergency stop switch circuit and emergency stop and reset method of emergency stop switch |
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